fixes the null exception on date humanize
added the PR to release notes
Merge pull request #193 from MehdiK/fixing-date-humanize

fixes the null exception on date humanize
add russian translation for ToWords
add PR to release notes
introduce grammatical case and gender
extract detection of grammatical number for russian
correct PR reference in release notes
extend ToWords with grammatical gender
provide the possiblity to use gender only if required by language